.faq-list[data-astro-cid-hemr5th4]{border-top:1px solid var(--border)}.faq-item[data-astro-cid-hemr5th4]{border-bottom:1px solid var(--border)}.faq-item[data-astro-cid-hemr5th4] summary[data-astro-cid-hemr5th4]{cursor:pointer;font-family:var(--font-head);justify-content:space-between;align-items:center;gap:16px;padding:14px 0;font-size:1.05rem;font-weight:600;line-height:1.3;list-style:none;display:flex}.faq-item[data-astro-cid-hemr5th4] summary[data-astro-cid-hemr5th4]::-webkit-details-marker{display:none}.faq-chev[data-astro-cid-hemr5th4]{color:var(--muted);flex:none;transition:transform .2s;display:inline-flex}.faq-item[data-astro-cid-hemr5th4][open] .faq-chev[data-astro-cid-hemr5th4]{transform:rotate(180deg)}.faq-item[data-astro-cid-hemr5th4] p[data-astro-cid-hemr5th4]{color:var(--muted);margin:0 0 16px}.calc-app{--key-h:58px;--gap:7px;padding:18px 18px 22px}.calc-top{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.calc-top .seg{background:var(--card-2)}.calc-top .seg button{padding:8px 16px;font-size:.95rem}.calc-top .seg button[aria-selected=true]{background:var(--accent-soft);color:var(--accent-text)}.calc-top-actions{align-items:center;gap:10px;display:flex}.icon-btn{width:38px;height:38px;color:var(--muted);border-radius:var(--radius);cursor:pointer;background:0 0;border:0;place-items:center;display:grid}.icon-btn:hover{color:var(--accent-text);background:var(--row-alt)}.icon-btn.sm{width:28px;height:28px}.history-btn{border:1px solid var(--border-strong);border-radius:var(--radius);height:40px;color:var(--accent-text);font-family:var(--font-head);cursor:pointer;background:0 0;align-items:center;gap:8px;padding:0 14px;font-weight:600;display:inline-flex}.history-btn[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent-soft)}.calc-body{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);align-items:stretch;gap:18px;display:grid}.calc-app.no-history .calc-body{grid-template-columns:minmax(0,1fr);max-width:560px;margin:0 auto}.calc-pad,.calc-history{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--card-2)}.calc-pad{padding:14px}:root[data-theme=dark] .calc-pad,:root[data-theme=dark] .calc-history{background:0 0}.calc-display{border:1px solid var(--border);border-radius:var(--radius);background:var(--card-2);flex-direction:column;justify-content:space-between;min-height:128px;padding:14px 18px 12px;display:flex}:root[data-theme=dark] .calc-display{background:#121c1e}.calc-display-top{color:var(--muted);align-items:center;gap:8px;min-height:28px;font-size:.82rem;font-weight:600;display:flex}.calc-display-top [data-calc-label]{text-overflow:ellipsis;white-space:nowrap;font-family:var(--font-mono);font-weight:500;overflow:hidden}.calc-flags{gap:6px;margin-left:auto;display:flex}.calc-flags b{font-family:var(--font-mono);color:var(--accent-text);font-size:.7rem}.calc-value{text-align:right;font-family:var(--font-mono);word-break:break-all;color:var(--text);font-size:2.6rem;line-height:1.1;display:block}.calc-value.md{font-size:1.9rem}.calc-value.sm{font-size:1.35rem}.calc-value.err{color:#e05252}.mem-row{grid-template-columns:repeat(4,1fr);align-items:center;height:34px;margin:8px 0 4px;display:grid}.mem-row button{font-family:var(--font-head);color:var(--muted);cursor:pointer;background:0 0;border:0;padding:4px;font-size:.75rem;font-weight:600}.mem-row button:hover{color:var(--accent-text)}.keys{grid-template-columns:repeat(4,1fr);grid-auto-rows:var(--key-h);gap:var(--gap);display:grid}.calc-app[data-mode=scientific]{--key-h:52px}.pad-keys{grid-template-columns:minmax(0,1fr);gap:16px;display:grid}.calc-app[data-mode=scientific] .pad-keys{grid-template-columns:minmax(0,30%) minmax(0,1fr)}.sci-panel{grid-template-rows:var(--key-h) 1fr;row-gap:var(--gap);display:grid}.sci-panel[hidden]{display:none}.sci-head{color:var(--muted);justify-content:space-between;align-items:center;gap:8px;font-size:.82rem;display:flex}.angle-toggle{border-radius:var(--radius);background:var(--accent-soft);color:var(--accent-text);font-family:var(--font-head);letter-spacing:.04em;cursor:pointer;border:1px solid #0000;align-items:center;gap:6px;padding:6px 10px;font-size:.8rem;font-weight:700;transition:border-color .15s,transform 50ms;display:inline-flex}.angle-toggle:hover{border-color:var(--accent)}.angle-toggle:active{transform:scale(.96)}.angle-toggle .icon{opacity:.75}.angle-toggle[aria-pressed=true] .on-rad,.angle-toggle[aria-pressed=false] .on-deg{display:none}.sci-keys{grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(4, var(--key-h));gap:var(--gap);display:grid}.angle-note{text-align:right;color:var(--muted);margin-top:6px;font-size:.72rem;display:block}.key{border-radius:var(--radius);background:var(--key-bg);height:100%;color:var(--text);font-family:var(--font-head);cursor:pointer;border:0;place-items:center;font-size:1.25rem;font-weight:500;transition:filter .1s,transform 50ms;display:grid}:root[data-theme=light] .key{border:1px solid var(--border)}.key:hover{filter:brightness(1.06)}.key:active,.key.pressed{filter:brightness(.95);transform:scale(.97)}.key.fn{background:var(--key-fn)}.key.op{background:var(--key-op);color:var(--accent-text);font-size:1.4rem}.key.eq{background:var(--accent);color:var(--accent-ink);font-size:1.4rem}.key.sci{background:var(--key-fn);font-size:1rem}.calc-note{text-align:center;color:var(--muted);justify-content:center;align-items:center;gap:8px;margin:12px 0 0;font-size:.78rem;display:flex}.calc-note .dot{width:6px;height:6px}.calc-history{flex-direction:column;min-height:100%;padding:18px 16px 16px;display:flex}.calc-history-head{justify-content:space-between;align-items:center;display:flex}.history-title{font-family:var(--font-head);font-size:1.15rem;font-weight:600;line-height:1.15}.history-title small{font-family:var(--font-sans);color:var(--muted);margin-left:6px;font-size:.78rem;font-weight:400}.calc-history .muted{margin:6px 0 14px;font-size:.85rem}.muted{color:var(--muted)}.history-list{gap:8px;max-height:340px;margin:0;padding:0;list-style:none;display:grid;overflow:auto}.history-list button{text-align:right;border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;background:0 0;gap:2px;width:100%;min-width:0;padding:10px 12px;display:grid}.history-list button:hover{border-color:var(--accent)}.history-list .h-expr{font-family:var(--font-mono);color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:.75rem;overflow:hidden}.history-list .h-res{font-family:var(--font-mono);text-overflow:ellipsis;white-space:nowrap;font-size:1.15rem;overflow:hidden}.history-empty{text-align:center;color:var(--muted);flex-direction:column;flex:1;justify-content:center;align-items:center;padding:24px 8px;font-size:.9rem;line-height:1.7;display:flex}.history-empty p{margin:0}.history-empty .title{font-family:var(--font-head);color:var(--text);margin:18px 0 10px;font-size:1.15rem;font-weight:700}.history-illo .paper{fill:var(--card);stroke:var(--border-strong);stroke-width:1.5px}.history-illo .line{stroke:var(--faint);stroke-width:3px;stroke-linecap:round;opacity:.7}.history-illo .dash{stroke:var(--faint);stroke-width:1.2px;stroke-dasharray:2 3;opacity:.7}.history-illo .eq{stroke:var(--accent);stroke-width:3px;stroke-linecap:round}.history-foot{border-top:1px solid var(--border);color:var(--muted);justify-content:center;align-items:center;gap:8px;margin:auto 0 0;padding-top:14px;font-size:.82rem;display:flex}.history-list:not(:empty)+.history-empty,.history-list:empty{display:none}.history-list:not(:empty){margin-bottom:14px}.kbd-help{margin-top:16px;font-size:.88rem}.kbd-help summary{cursor:pointer;color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;list-style:none;display:flex}.kbd-help summary::-webkit-details-marker{display:none}.kbd-toggle{align-items:center;gap:8px;display:inline-flex}.kbd-help summary:hover .kbd-toggle{color:var(--accent-text)}.kbd-help .chev{transition:transform .2s}.kbd-help[open] .chev{transform:rotate(180deg)}.kbd-list{color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px 22px;margin:14px 0 0;padding:0;list-style:none;display:flex}.kbd-list li{align-items:center;gap:7px;display:inline-flex}.kbd-keys{gap:4px;display:inline-flex}kbd{font-family:var(--font-mono);text-align:center;border:1px solid var(--border-strong);min-width:22px;color:var(--text);background:var(--card-2);border-radius:4px;padding:2px 6px;font-size:.72rem;font-weight:600}.chips{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin-top:18px;font-size:.88rem;display:flex}.chips>span{align-items:center;gap:6px;display:inline-flex}.chip{border:1px solid var(--border-strong);background:var(--card-2);border-radius:var(--radius);cursor:pointer;align-items:center;gap:8px;padding:7px 12px;font-size:.88rem;display:inline-flex}.chip:hover{border-color:var(--accent);color:var(--accent-text)}.calc-app:fullscreen{background:var(--bg);border:0;padding:32px max(16px,50vw - 520px);overflow:auto}@media (width<=760px){.calc-body,.calc-app[data-mode=scientific] .calc-body{grid-template-columns:minmax(0,1fr)}.calc-app{--key-h:52px}.history-empty{padding:12px 8px}.history-illo{width:80px;height:80px}.calc-app[data-mode=scientific] .pad-keys{grid-template-columns:minmax(0,1fr)}.sci-panel{grid-template-rows:36px auto}.calc-app[data-mode=scientific] .sci-keys{grid-template-rows:repeat(2,44px);grid-template-columns:repeat(6,1fr)}.key.sci{font-size:.92rem}.kbd-precision{display:none}.calc-history .history-list{max-height:220px}}